CN102792239B - Distributed control system and method for controlling multiple irrigators in irrigation system - Google Patents
Distributed control system and method for controlling multiple irrigators in irrigation system Download PDFInfo
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- CN102792239B CN102792239B CN201180012814.1A CN201180012814A CN102792239B CN 102792239 B CN102792239 B CN 102792239B CN 201180012814 A CN201180012814 A CN 201180012814A CN 102792239 B CN102792239 B CN 102792239B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25356—Inductive coupling of power and signal
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Abstract
A distributed control system is provided wherein a master controller inductively delivers power and data to a plurality of remote slave modules or controllers via a plurality of coupling loops formed along a length of transmission line. Each of the remote slave modules, in turn, inductively delivers return data to the master controller via the plurality of coupling loops. The use of inductive coupling provides an advantage over the state of the art because no direct galvanic electrical connection is required between the transmission line and the remote slave modules which promise to simplify installation and enhance long-term reliability. Example applications for the control system described herein include agricultural irrigation systems where individual sprinkler and valve components may be controlled collectively, individually, or in groups or subsets, to vary application rates according to prescribed irrigation parameters.
Description
The application requires to enjoy in the right of priority of the U.S. Provisional Application 60/302,841 of submitting on February 9th, 2010, and the full text of this application is incorporated herein by reference.
Technical field
The present invention relates to distributed control technology haply, relates more specifically to for example control to single sprinkler or valve part in agricultural irrigation systems.
Background technology
Known and can energy and/or data have been distributed and be transferred on the equipment of transmission line or cable arrangements employing system.Exemplary document in american documentation literature comprises as follows: United States Patent (USP) 7,176,589 disclose for example electron device of inductive coupler, power converter and modulation/demodulation circuit, and it is for distributing energy and/or data and/or be transferred to the electronic equipment of arranging along underwater cable; United States Patent (USP) 6,624,745 disclose a kind of data communication system of inductive coupling, and it is along coming distribution energy and data at for example same two-wire system conductor between network workstation; United States Patent (USP) 4,244,022 discloses a kind of solid-state control system for large-scale irrigation, it has CPU (central processing unit), this CPU (central processing unit) has major clock and is connected to central authorities/syringe time block system of a plurality of satellite controllers, and satellite controller is connected to again to control and irrigates in solenoid valve.Above-mentioned and non exhaustive, and be only the example of the patent relevant to distributed energy system.
The object of the invention is of will describing below simplify to install, and strengthens reliability, but and reduces potentially the cost of the distributed energy system using in the irrigation system of exemplary indefiniteness.
Summary of the invention
In the embodiment of an exemplary still indefiniteness, the invention provides dcs, wherein master controller is by arranging a plurality of coupling loops by energy and data are transported to a plurality of long-range submodules in proximity or from controller along the length of transmission line.In this exemplary embodiment, each long-range submodule is transported to master controller by a plurality of coupling loops of the length distribution along described transmission line by return data again in proximity.Use inductive coupling that the advantage with respect to prior art is provided, this is that this will certainly simplify installation, and strengthens long-term reliability because do not need the electrical connection of direct current type between transmission line and long-range submodule.
The exemplary application of control system as described herein comprises agricultural irrigation systems, and wherein single sprinkler parts can by universally, individually or in groups or become subset and control, change amount of application with the irrigation parameter according to appointment.
Correspondingly, but aspect an exemplary indefiniteness, provide a kind of dcs, it comprises: master controller, and it is connected on transmission line, and is suitable for conveying capacity and data and receives data to transmission line and from transmission line; This transmission line comprises the first conductor and the second conductor that is configured to carry differential data; A plurality of coupling mechanisms of arranging along transmission line, each coupling mechanism has surrounded a pair of inductive coupling loop forming on transmission line, and pass inductor or coil to set up the mutual coupling between transmission line and inductor, described inductor is connected to one or more from controller; Wherein, described mutual coupling makes data to be transferred to and one or morely from controller and from one or more, from controller, to be transferred to master controller from master controller.
But aspect another exemplary indefiniteness, provide for by transmission line with from the coupler component of controller electric coupling, wherein this coupler component comprises housing and the split core with lower body part and upper cover part, wherein upper cover part can move between open and close position, the first halfbody of split core is supported in upper cover part with the inductive coupling loop forming on transmission line, and the second halfbody of split core and coil support are in lower body part.
Aspect the exemplary but indefiniteness of another one, a kind of method of controlling a plurality of sprinkler parts in irrigation system is provided, this irrigation system comprises for controlling a plurality of master controllers from controller, wherein should be connected with the one or more operability described a plurality of sprinkler parts from controller, the method comprises along transmission line arranges a plurality of inductive coupling loops, and makes transmission line and a plurality of from controller mutual coupling; And through transmission line, from master controller, transmit a signal to a plurality ofly from controller, and from a plurality of, from controller, receive signal to master controller through transmission line.
Accompanying drawing explanation
In connection with following accompanying drawing, the present invention is described in more detail now.
Fig. 1 is the schematic diagram of simplifying, and has shown the control system of the embodiment of but indefiniteness exemplary according to;
Fig. 2 is the schematic diagram of the master controller that extracts from the control system of Fig. 1;
Fig. 3 is the enlarged diagram from controller extracting from the control system of Fig. 1;
Fig. 4 is the more detailed schematic diagram from controller shown in Fig. 3;
Fig. 5 is the schematic diagram from controller in an alternative embodiment;
Fig. 6 is according to the skeleton view of the circuit board from controller of an exemplary;
Fig. 7 is the front view of the circuit board shown in Fig. 6;
Fig. 8 is the vertical view of the circuit board shown in Fig. 6;
Fig. 9 is the side view that rotates to vertical direction of the circuit board shown in Fig. 6;
Figure 10 is mounted in the skeleton view of the circuit board from controller in housing;
Figure 11 is the skeleton view showing with profile type from controller shown in Figure 10;
Figure 12 has shown an exemplary embodiment, and wherein the irrigation lines of master controller and the setting from controller along rigidity is installed.
Figure 13 is the skeleton view of Another application, and wherein master controller is arranged on linear one end of irrigating machine, and from controller adjacent to single sprinkler be arranged on the sagging flexible pipe being folded down from the built on stilts framework of machine;
Figure 14 is the schematic diagram of the Another Application similar to Figure 13, but wherein install at the top from controller along built on stilts framework;
Figure 15 is the skeleton view of another one application, and wherein master controller is arranged on the centrally-pivoted axle of pivoting irrigation machine, and install at the top of the built on stilts framework from controller along machine; And
Figure 16 A and Figure 16 B show the alternative inductive coupler that comprises sinusoidal waveform inductive coupling loop, and this coupling mechanism is shown as in an open position and make-position.
Embodiment
For the ease of understanding, Fig. 1 has shown and the dcs 10 of for example irrigating the inductive coupling that machine together uses with reduced form.Master controller 12 is connected with transmission line 14.Master controller 12 is arranged in control system 10, so that energy and order data are transported to transmission line 14, and is further configured to receive state and the sensing data of being carried by transmission line 14.
The energy that master controller 12 is transported to transmission line 14 is time-division multiplex standard, has the frequency that is less than about 200kHz, and peak peak to peak amplitude is less than approximately 48 volts.Master controller 12 is transported to the data of transmission line 14 and is appointed as bidding protocol, wherein Data Modulation becomes the form of continuous wave, yet other forms of modulation also can adopt, comprise frequency shift keying, phase-shift keying (PSK), pulse code modulation (PCM), or other forms of modulation well known in the prior art.
The data that master controller 12 receives from transmission line 14 are appointed as status protocol, wherein data demodulation from continuous wave signal, yet other forms of modulation also can adopt, comprise frequency shift keying, phase-shift keying (PSK), pulse code modulation (PCM), or other forms of modulation well known in the prior art.The modulating frequency of the signal transmitting and the signal receiving can be identical or different, and this depends on application.In a preferred embodiment, the carrier frequency receiving is less than about 1000kHz.
Transmission line 14 is the transmission lines with the balance of two conductors (seeing conductor 92a and 92b in Fig. 3), and these two conductor arrangement become to carry differential signal.By this way, signal is propagated along the length of transmission line 14 with minimum decay, and this is to distribute because the field of each conductor offsets to reduce radiation effectively.Transmission line 14 has characteristic impedance value, and it is the structure of transmission line 14 and the function of environment.In a preferred embodiment, the characteristic impedance of transmission line 14 is less than 200 ohm.Transmission line 14 can be the transmission line of twinlead or double cut line type, and can or not shield according to application shielding.
Still with reference to Fig. 1, conductor forms a plurality of coupling loops 16 along transmission line 14, and a part of route of the loop 16 that is wherein respectively coupled is by coupling mechanism 18.Each details that is coupled loop 16 and corresponding coupling mechanism 18 will below discuss in more detail.Each coupling mechanism 18 is connected with submodule or from controller 20, and its details will discuss in more detail hereinafter.Line terminal 22 is connected with one end of transmission line 14.In a preferred embodiment, line terminal 22 is resistor, and it has the resistance value of the characteristic impedance that approximates greatly transmission line 14.The load that one skilled in the art will recognize that other type also can be used as line terminal 22, for example inductive or capacity load, and this can't depart from scope of the present invention.
Referring now to Fig. 2, master controller 12 comprises that configuration is used to provide energy to each in a plurality of submodules 20 (Fig. 1) the microcontroller 40 of communicating by letter with it.Microcontroller 40 is connected with user interface 42, and this user interface 42 makes operator can configure and operate dcs 10 (Fig. 1).Microcontroller 40 is further connected to communication port 44, makes to carry out message exchange with other system that comprises other controller.
By microcontroller 40, generate carrier signal 46, to promote along the energy of transmission line 14 and the transmission of data.Depend on application, carrier signal 46 can be square wave or sinusoidal wave form.The further generated data signal 48 of microcontroller 40, it has reflected the agreement in microcontroller 40 interior definition.AND circuit 50 and carrier signal 46 are connected with each in data-signal 48, so that the modulated output signal roughly being indicated by label 52 to be provided.Signal 52 passes through traffic filters 54 to remove the false shadow of unnecessary spectrum, and by transmit driver 56, is amplified the signal of gained.Transmission/reception switch 58 is connected to reception relation the signal that transmit driver 56 provides, and be connected to Ba Lun transformer 62, and the switch controlling signal 60 that provides in response to microcontroller 40 be provided and provide the energy of difference and data-signal to transmission line 14 by connector 64a and 64b.
Difference return data signal from transmission line 14 is delivered to transmission/reception switch 58 by Ba Lun transformer 62 as single-ended signal.Microcontroller 40 is configured to provide return data signal when by command transfer/receiving key 58, to enter receiving mode and cycle of sending out from submodule 20 (Fig. 1), therefore, signal from transmission line 14 is routed to return signal amplifier 66 and return signal wave filter 55, afterwards to returning to logic receiver 68.Herein, the Signal Regulation of returning becomes can provide logic level data, and sends to microcontroller 40 by return data line 70.
Referring now to Fig. 3, in figure, shown with coupling loop 16 be associated from controller 20.Should comprise the coupling mechanism 18 being connected to from Control Component 80 from controller 20, it will be described in more detail below.From Control Component 80, be connected to solenoid 82.Solenoid 82 is used for driving the parts of sprinkler, and for example valve (not shown), still also can be used for other switch application.In addition, also can use other load, stepper motor for example, this does not depart from scope of the present invention.In a preferred embodiment, solenoid 82 is bistable state holding solenoid valves.Warning switch 84 is connected to from Control Component 80, and is configured to provide and can comprises initialized user's requirement.From Control Component 80, also can be connected to flow switch 86, when the flow velocity of the fluid in conduit surpasses preset value, flow switch 86 will provide the closing of contact.Other sensor can be connected to similarly from Control Component 80, and this does not depart from scope of the present invention.
Coupling mechanism 18 is comprised of coupling mechanism inductor 88 and coupling mechanism closer 90.This has been combined to form ring-like inductor, it is characterized in that having comprised magnetic flux.When being coupled, loop 16 and coupling mechanism inductor 88 are configured to as shown in Figure 3, and coupling mechanism closer 90 be placed in from coupling mechanism inductor 88 very close to and while forming matching relationship with it, formed loose inductance or mutual coupling, this makes it possible to transmit energy and data, and this will below discuss in more detail.
Transmission line 14 comprises the first conductor 92a and the second conductor 92b, and they combine and are configured to propagate differential signal in the length of transmission line 14.Because the signal in corresponding conductor 92a and 92b is difference on attribute, almost do not have useful energy can be coupled between transmission line, this is because the field of every line can balance out.Yet, roughly 360 ° of closed loops by arrangement of conductors 92b and formation annular (are indicated by label 94 substantially, be called homophase loop herein), and further take out conductor 92a and by its torsion, form afterwards the loop (being called inverter loop herein) roughly being indicated by label 96, the differential signal in conductor provides the regional area of homophase field, like this, they be added to coupling loop 16 regional area on.Inductive coupling effectively between the differential signal existing in that the regional area of the homophase field occurring in coupling loop 16 makes to exist in conductor 92a and 92b and coupling mechanism inductor 88.In a preferred embodiment, the core material using in coupling mechanism 18 comprises powdered ferrite material, and wherein, when coupling mechanism closer 90 mates as described below with coupling mechanism inductor 88, the inductance of coupling inductor 88 is approximately 150 μ H.In addition, in a preferred embodiment, the inductance of coupling loop 16 is less than 1.4 μ H, and the diameter of coupling loop 16 is less than 50mm.
Have been found that the inductance that increases coupling loop 16 can improve the energy transmission from transmission line 14 to coupling mechanism inductor 88, this has changed degree of coupling effectively.For this reason, exist the coupling of optimum degree for giving the submodule 20 of determined number, wherein, along with the increase of the quantity of submodule 20, the degree of coupling should reduce, to guarantee that the energy requirement of all submodules 20 is all satisfied.
Referring now to Fig. 4 and Fig. 5, comprise from the submodule 20 of Control Component 80 by coupling loop 16 and transmission line 14 couplings.Coupling mechanism inductor 88 is configured to by Energy extraction with in the transmission line 14 of being discussed before sensing.A wire of coupling mechanism inductor 88 is connected on the shared grounding of module, and another root wire is connected to logic rectifier 100.With respect to common, from coupling loop 16, sense the alternating current coupling mechanism inductor 88, logic rectifier 100 provides positive pulse direct current, and by capacitor 102 by its tranquilization.The steady voltage at capacitor 102 places is transported to the input end of voltage regulator 104.
Voltage regulator 104 provides the Voltage-output power supply of stabilization for microcontroller 106 and nonvolatile memory 108.Nonvolatile memory 108 is included as the ID address that submodule 20 provides unique identifier.On the warning switch 84 and flow switch 86 of discussing before microcontroller 106 is also connected to.
Coupling mechanism inductor 88 is also connected to the data rectifier 110 that the signal from coupling ring road 16 is demodulated to data-signal.The data resistors in series 112 of these signals by having formed voltage divider and data resistors in parallel 114 are adjusted to and are suitable for the logic level that is connected with microcontroller 106.Herein, the order and the data that come from master controller 12 (Fig. 1) offer microcontroller 106, and are configured to sequential, asynchronous and data serializing.The data encoding that those skilled the in art will appreciate that other form also can be used, and this does not depart from scope of the present invention.
Microcontroller 106 is only configured to response and is directed to identity embedded with it and matches and be stored in order and the data in nonvolatile memory 108.When order comprises the address of clearly mating about locking phase with the identity in nonvolatile memory 108, there is described coupling, therefore, the mode that a plurality of submodules 20 can real-time synchronization responds same order.
Coupling mechanism inductor 88 is connected on the Electromagnetic Drive voltage switch 116 of being controlled by Electromagnetic Drive voltage switch control line 118, and described Electromagnetic Drive voltage switch control line 118 is controlled by microcontroller 106.The control of this line will discuss in more detail hereinafter.When voltage switch 116 is closed, from transmission line 14, sense that the alternating current of coupling mechanism inductor 88 offers voltage multiplier 120.This voltage multiplier utilizes the combination of diode and capacitor to carry out rectification, and passive boost converter is provided.In a preferred embodiment, use and to have applied the half-wave series connection multiplier that Mary Willard cascaded topology is manufactured pattern, however the multiplier well known in the prior art of other type also can use, this does not depart from scope of the present invention.
From the stored energy of multiplier 120 in Electromagnetic Drive voltage capacitor 122.Electromagnetic Drive monitoring cable 124 is connected on capacitor 122 and microcontroller 106, makes it the voltage on capacitor can be detected.So, microcontroller 106 can be ordered Electromagnetic Drive voltage switch 116, makes to keep specific aim voltage on capacitor 122.Those skilled the in art will appreciate that other is used for maintaining the mode of specific aim voltage, comprise Electromagnetic Drive voltage switch 116 is remained on from the Zener diode in parallel with capacitor 122 to the position close to very to maintain target voltage.H bridge electromagnetic driver 126 is connected on capacitor 122 with the relation of feed end.Electromagnetic driver 126 is connected to solenoid 82 with driving relationship, and can drive solenoid 82 with forward and reverse mode, as the response of the order when microcontroller 106 drives H bridge control line 128, microcontroller 106 being provided.In a preferred embodiment, Electromagnetic Drive voltage capacitor 122 maintains the electric state that is full of, thereby when there is power or transmission line fault, solenoid 82 can be set to the predefined default conditions by user.The electric current that is transported to solenoid 82 is conducted through H bridge current sensing resistor 130, wherein obtain the voltage that is directly proportional to electric current by solenoid 82, and this voltage can offer microcontroller 106 by current detecting line 132.So, during the state variation of solenoid 82, microcontroller 106 can be monitored the voltage based on time variation along detection line 132, to determine its running status.
With reference to Fig. 4, coupling mechanism inductor 88 is further connected to data and returns to rectifier 134 individually, and its rectification senses the negative-going pulse of the alternating current coupling mechanism inductor 88 from transmission line 14.The negative electrode of rectifier 134 is connected to and has wherein stored relative common potential is that the data of negative voltage are returned on holding capacitor 136, until return to transmission from submodule 20 to the data of master controller 12 need to this voltage time.Microcontroller 106 creates and returns to carrier signal 138, and in a preferred embodiment, the frequency of this signal is less than 1000kHz.
Microprocessor 106 further provides the data-signal 140 that has reflected the agreement of definition in microcontroller 106.AND circuit 142 is connected to each that return in carrier signal 138 and data-signal 140, so that the modulated output signal roughly being indicated by label 144 to be provided.Return voltage switch 146 is configured to respond modulated output signal 144, with the ratio mating with signal 144, the negative voltage transition of capacitor 136 carryings is got back in coupling mechanism inductor 88.So, negative voltage senses electric current in coupling mechanism inductor 88, in coupling loop 16, causes magnetic field, wherein difference return data signal will be induced in transmission line 14, it will propagate and get back to master controller 12 along transmission line, and it will be received and decode there, as previously mentioned.
Referring now to the constructive alternative of Fig. 5, the modulated output signal roughly being indicated by label 144 is connected to transmission coupling condenser 150.Transmission coil or inductor 154 are wrapped on coupling mechanism inductor 88 or are adjacent to it and place.Transmission coil tank capacitor 152 is in parallel with transmission inductor 154, so that the lc circuit with the resonance frequency that approximates greatly the frequency of returning to carrier signal 140 to be provided.So for transmission inductor 154 provides electric current, in coupling loop 16, produce magnetic field, wherein difference return data signal will be induced in transmission line 14, and it will be propagated and get back in master controller 12 along transmission line, it will be received and decode there, as previously mentioned.The mode that one skilled in the art will recognize that other also can be coupled to transmission line 14 from microcontroller 106 by return data, comprises and inserts one or more diodes of connecting with inductor 154.
Fig. 6 to 9 has illustrated the exemplary circuit board 156 from controller, and it has supported the coupling mechanism 18 being formed by inductor 88 and coupling mechanism closer 90.Coupling mechanism inductor 88 comprises the first ferrite iron core part 158 of division and is wrapped in iron core winding or coil 160 around.Coupling mechanism closer 90 is formed by the second ferrite iron core part 162 of the division matching.Figure 10 and 11 described be arranged on from controller housing 164 comprise coupling mechanism inductor 88 and coupling mechanism closer 90 from controller board 156, ring-like through this housing 164 with as described in Figure 3 of conductor 92a and 92b.Housing 164 is configured to comprise lower body part 166 and upper cover part 168; Wherein, upper cover part 168 is supported on lower body part 166 pivotally, and can between closure and open position, move, and open position is shown in Figure 10.By coupling mechanism closer 90 being supported in the upper cover part 168 of housing 164, when opening housing, just can easily touch coupling mechanism 88.
Control system described herein has many application, for example, in various agricultural irrigation systems, comprises that be fixedly installed, linear and machine pivoting, and wherein many single sprinklers are carried on shared water supply line or framework.In exemplary structure, master controller 12 can be fixed on one end of machine, and from controller be fixed on corresponding single sprinkler near.Each can be connected to for operating solenoid (seeing the solenoid 82 of Fig. 3), stepper motor or other suitable drive unit of near the valve corresponding sprinkler import from controller.
Dcs described herein has many application (but being not limited to this) in agricultural irrigation.
About agricultural irrigation, but Figure 12 has illustrated a kind of application for exemplary indefiniteness of the present invention, wherein singlely from controller 20 (being connected with master controller 12), be fixed on the substrate of rifle formula sprinkler parts 169 for example, described sprinkler parts 169 comprise the valve of installing along the fixing ground engagement pipeline 170 in the irrigation system being fixedly installed.
Figure 13 has illustrated the application that another is exemplary, wherein master controller 12 and single being arranged on linear irrigation machine 172 from controller or module 20.In the present embodiment, submodule 20 is placed on the sagging flexible pipe 174 being connected with each sprinkler 175 being folded down from built on stilts framework 176.
Figure 14 has illustrated and has been similar to another the exemplary application shown in Figure 13, yet wherein from controller or module 20, along the built on stilts framework 176 of linear irrigation machine, installed.
Figure 15 has illustrated and has been similar to the exemplary application of the another one shown in Figure 14, yet wherein the form of irrigation equipment is pivoting machine 178, and vertical pipe section 180 represents the centrally-pivoted axle of machine.
Figure 16 A and 16B have shown the alternative inductive coupler assembly shown in similar Fig. 6 to 10, but simplify to some extent for the purpose of convenient and clear.In this constructive alternative, only partly shown housing 164, lower body part 182 has supported from controller circuit board 184, split core inductor portion portions 186 and winding or coil 188.Split core coupling mechanism closer 190 is supported in the upper cover part (not shown) of housing.Yet be appreciated that, as upper cover part 168 (Figure 10 to 11), this upper cover part can rotate to make-position (Figure 16 B) from open position (Figure 16 A) pivot, therefore when closure, split core inductor portion portions 186 and split core coupling mechanism closer 190 will be around transmission line conductors 192a and 192b and closed electrical sensor coupling mechanism.In this alternative arrangement, conductor 192a and 192b arrange the mirror image loop that has formed the shape with sinusoidal wave form, be called sinusoidal loop herein, a pair of loop part 194,196 in each loop is arranged so that ferritic split core coupling mechanism closer 190 is through loop.Be appreciated that and comprise that the circuit of inductive coupling is identical with the first embodiment.Only have loop to change to some extent, from 360 ° of closed substantially loops that loop roughly extends at linear path to " expansion ", wherein the bending radius on each loop is roughly the same.
Although described the present invention in conjunction with being considered at present tool practicality and preferred embodiment, yet it will be appreciated that, the invention is not restricted to disclosed embodiment, but on the contrary, the present invention has covered various modifications and equivalent layout.
Claims (20)
1. a dcs, is characterized in that, comprising:
Master controller, it is connected on transmission line, and is suitable for conveying capacity and data to transmission line and receives the data from transmission line; Described transmission line comprises the first conductor and the second conductor that is configured to carry differential data;
And a plurality of coupling mechanisms of arranging along transmission line, each coupling mechanism has surrounded a pair of inductive coupling loop being formed in described transmission line, and passes coil to set up mutual coupling between transmission line and coil, and described coil is connected to one or more from controller;
Wherein, described mutual coupling allows from controller and from one or more data from controller to master controller, to transmit to one or more from master controller.
2. dcs according to claim 1, is characterized in that, for each inductive coupling loop, described the first conductor and the second conductor extend along contrary direction.
3. dcs according to claim 1, is characterized in that, describedly one or morely from controller, with solenoid, controls one or more sprinkler parts.
4. dcs according to claim 1, it is characterized in that, described coupling mechanism comprises the first and second split core parts, and they jointly form the ring structure iron core that described inductive coupling loop therefrom passes, wherein, the first or second split core is partly through coil.
5. dcs according to claim 4, is characterized in that, described the first and second split core parts consist of powdered ferrite material.
6. dcs according to claim 1, is characterized in that, described master controller comprises at least one microcontroller, and described microcontroller is connected to user interface, allows operator's configuration and operates described dcs.
7. dcs according to claim 1, is characterized in that, by the switch of described microprocessor controls, determines when data transmission is to described one or more from controller, and when from described, one or morely from controller, receives data.
8. dcs according to claim 4, is characterized in that, the described circuit board that has supported described the first and second split core parts and described inductive coupling loop that comprises from controller.
9. dcs according to claim 8, is characterized in that, also comprises the housing that has surrounded described circuit board, described the first and second split core parts and described inductive coupling loop.
10. dcs according to claim 9, it is characterized in that, described housing comprises lower body part and upper cover part, described upper cover part can move between open position and make-position, and wherein said first division iron core part and described inductive coupling loop are supported in described upper cover part, and described the second split core part and coil support are in described lower body part.
11. dcss according to claim 1, is characterized in that, described one or more from controller comprise a plurality of substrate parts that are separately fixed at the sprinkler of arranging along water supply line from controller.
12. dcss according to claim 1, it is characterized in that, described one or more from controller comprise a plurality of be separately fixed at linear formula or pivoting irrigate the sagging flexible pipe that the built on stilts framework of machine is connected from controller, each sagging flexible pipe has supported by described a plurality of sprinklers of controlling from controller.
13. dcss according to claim 1, it is characterized in that, described one or more from controller comprise a plurality of along linear formula or pivoting, irrigate that the built on stilts framework of machine installs from controller, wherein a plurality of sagging flexible pipes are folded down from described built on stilts framework, and each sagging flexible pipe has supported by described a plurality of corresponding sprinklers of controlling from controller.
14. dcss according to claim 1, is characterized in that, described inductive coupling loop is the roughly closed circuit of 360 ° of annular.
15. dcss according to claim 1, is characterized in that, described inductive coupling loop is the sinusoidal loop of substantial mirror images.
16. for by transmission line with from the coupler component of controller electric coupling, wherein said coupler component comprises housing and the split core with lower body part and upper cover part, described upper cover part can move between open position and make-position, wherein the first halfbody of split core is supported in described upper cover part with the inductive coupling loop being formed in transmission line, and the second halfbody of split core and coil support are in described lower body part.
17. inductive coupler assemblies according to claim 16, is characterized in that, described lower body divide comprise supporting the second halfbody of described split core and coil from controller circuit board.
18. inductive coupler assemblies according to claim 16, is characterized in that, described inductive coupling loop is annular, the closed circuit of 360 ° roughly.
19. inductive coupler assemblies according to claim 16, is characterized in that, described inductive coupling loop is the sinusoidal loop of substantial mirror images.
20. 1 kinds for controlling the method for a plurality of sprinklers of irrigation system, it is characterized in that, described irrigation system comprises for controlling a plurality of master controllers from controller, describedly from controller operability, is connected to one or more described a plurality of sprinkler parts, and described method comprises:
(a) along transmission line, arrange a plurality of inductive coupling loops, and make described coupling loop and described a plurality of from controller mutual coupling; And
(b) through described transmission line, from described master controller, transmit a signal to described a plurality ofly from controller, and from described, a plurality of from controller, receive signal to described master controller through described transmission line.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30284110P | 2010-02-09 | 2010-02-09 | |
| US61/302,841 | 2010-02-09 | ||
| PCT/US2011/023970 WO2011100210A2 (en) | 2010-02-09 | 2011-02-08 | Inductively coupled distributed control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102792239A CN102792239A (en) | 2012-11-21 |
| CN102792239B true CN102792239B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180012814.1A Expired - Fee Related CN102792239B (en) | 2010-02-09 | 2011-02-08 | Distributed control system and method for controlling multiple irrigators in irrigation system |
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| Country | Link |
|---|---|
| US (1) | US9128489B2 (en) |
| EP (1) | EP2534546A4 (en) |
| CN (1) | CN102792239B (en) |
| AU (1) | AU2011216065A1 (en) |
| WO (1) | WO2011100210A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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- 2011-02-08 EP EP11742671.8A patent/EP2534546A4/en not_active Withdrawn
- 2011-02-08 AU AU2011216065A patent/AU2011216065A1/en not_active Abandoned
- 2011-02-08 CN CN201180012814.1A patent/CN102792239B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011100210A2 (en) | 2011-08-18 |
| AU2011216065A1 (en) | 2012-09-20 |
| US20110196541A1 (en) | 2011-08-11 |
| CN102792239A (en) | 2012-11-21 |
| EP2534546A2 (en) | 2012-12-19 |
| EP2534546A4 (en) | 2015-05-20 |
| US9128489B2 (en) | 2015-09-08 |
| WO2011100210A3 (en) | 2011-11-24 |
| AU2011216065A2 (en) | 2012-12-06 |
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